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VLANlab

CALCULATE • LOOKUP • VERIFY

MyNet
What Is My IP?IPv6 Test
Speed TestSoon
DNS
DNS LookupDNS PropagationDNS Health CheckerSPF AnalyzerPTR LookupCAA RecordSRV RecordDNS TraceDNS PrivacyDANE / TLSADNSSEC CheckerSPF BuilderDKIM GeneratorZone DiffPTR Zone Generator
Calculators
Subnet CalculatorCIDR Range ViewerVLSM CalculatorVLAN PlannerBandwidth CalcIPv6 Subnet CalcIP ↔ BinarySupernet CalcCIDR MergeCIDR to IP RangeCIDR SplitIPv4 → IPv6CIDR OverlapFree IP Space FinderDHCP CalculatorMTU Calculator
Lookup
WHOIS LookupDomain Age CheckerSubdomain FinderIP GeolocationASN / BGP LookupIP Blacklist CheckReverse IP LookupMAC Address LookupBGP Prefix LookupRPKI / ROA CheckDomain Availability
Email
Email InspectorDKIM CheckerEmail HeadersSMTP TestSMTP TLS CheckMX Health CheckEmail SecurityDMARC Generator
Temp MailSoon
Testing
Is It Down?SSL/TLS CheckerOpen Port CheckerOG Tag CheckerOCSP CheckerPing / LatencyHTTP InspectorRedirect ChainCSP AnalyzerTech Stack CheckerBetaTracerouteBetaHTTP/2 + HTTP/3robots.txt ViewerSSL Cert DecoderBanner GrabberWebSocket TesterCORS TesterHTTP TimingStructured DataPWA ManifestSEO Auditor
Security
One-Time SecretHash GeneratorPassword StrengthSecurity.txtCT Log SearchAXFR Zone Test
HTTP Sec ScoreSoon
WebRTC Leak TestIP Reputation
DevKit
JSON FormatterYAML FormatterBase64 / URL EncodeJWT DecoderRegex TesterUnix TimestampCron BuilderUUID / ULIDPunycode / IDNBase ConverterACL Generator
Frontend
CSS Unit ConverterColor ToolkitGradient GeneratorcURL BuilderURL ParserURL Encoder/DecoderHTTP Status CodesBox Shadow GenFavicon GeneratorFlex & Gridrobots.txt Tester
Text
Text CompareCase ConverterText CleanerText AnalyzerText TransformerList ToolsLorem GeneratorSlug Generator
Cloud
Cloud VPC PlannerCloud IP RangeSecurity GroupsIAM AnalyzerK8s CIDR PlannerFirewall BuilderHCL FormatterEgress Cost CalcCloud DNS Zone
VM Cost EstimatorSoon
Virtualization
Proxmox Net ConfigVMware Port GroupHyper-V vSwitchVXLAN VNI PlannerKVM Net ConfigXCP-ng NetworkNSX-T Segment
OSINT
Disposable Email DetectorPhone InspectorTor Exit NodeVPN/Proxy DetectDomain ReputationTyposquat DetectUsername SearchFavicon Hash
DevOps
GitHub ActionsDockerfile Gendocker-composeArgoCD AppK8s Manifests
About

© 2026 VLANlab

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VLANlab

One tab, every tool you need.

The fastest Internet toolkit for IT professionals.

Subnet math, DNS lookups, SSL checks, port scanning, JWT decoding, and 100+ more.
Instant results, shareable links, free forever.

No account · No ads · No tracking · No rate limits · Free for humans

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Tools Catalog

Quick Access

Subnet CalculatorCalculators
What Is My IP?MyNet
DNS LookupDNS
HTTP InspectorTesting
WHOIS LookupLookup
One-Time SecretSecurity
Text CompareText
Is It Down?Testing
Domain Age CheckerLookup
SSL/TLS CheckerTesting
Open Port CheckerTesting
JWT DecoderDevKit
Unix TimestampDevKit

Built for IT professionals

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Instant results

Every calculation runs in your browser - no server round-trip, no waiting.

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Shareable URLs

Every result has a unique link. Share a subnet layout or IP lookup with one click.

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Dark mode first

Designed for engineers who live in terminals. Easy on your eyes at 2am.

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No login, no ads

Free forever. No account required, no tracking, no advertisements.

Learn more about what we are building and why.

The one-stop shop engineers actually want.

Free networking and security tools for engineers, sysadmins, and DevOps teams. Subnet calculator, CIDR planner, DNS lookup, SPF checker, DMARC checker, port scanner, SSL certificate checker, HTTP security headers, IP geolocation, JWT decoder, traceroute, and 100+ more - all instant, all free, no account required.

Used by network engineers to debug DNS propagation, sysadmins to validate email security records, and developers to inspect HTTP headers and decode tokens. Every result has a shareable URL. Works in any browser, no login, no ads, no rate limits.

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